package demo509;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Test02 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("1.txt");
        byte[] buffer=new byte[1024];
        int bytesResd;
        StringBuilder content= new StringBuilder();
        while ((bytesResd =fis.read(buffer))  != -1){
            content.append(new String(buffer, 0,bytesResd));
        }
        System.out.println("文件内容："+content.toString());
    }
}
